When I got home today I went to back into my parking spot and couldn't get my truck in reverse, or any other gear for that matter.

I've been suspecting something was going to go wrong because the last few weeks or so when I push the clutch in it sounded like bb's rolling around in a metal coffee can. Since I have owned it (2 yrs) the clutch has seemed funny anyhow, as in I really have to feather it so it doesn't grab and stall out.

So I've visually inspected what I can so far. Master cylinder fluid is at a proper level and I pulled the inspection cover on the transmission. I didn't see any fluid and reached inside and there wasn't residue in there either. I observed the throwout bearing pushing the clutch cover fingers in when the pedal is pressed and that is about it.

Just wondering about some additional checks I can perform to pinpoint the problem, as well as how to fix it and get rolling again.

1999 Ford Ranger 4x4 XLT
3.0 V6
134,xxx miles
No modifications

 

sounds like your throwout bearing and probably your slave cylinder are toast.

 

I would agree, throwout bearing has been going bad for awhile and it's time to replace it, and the rest.
You are not getting the full travel of the slave any more.